Pharmacology is a separate discipline in the health sciences that is frequently mistaken with pharmacy. The study of how a drug affects a biological system and how the body reacts to it is known as pharmacology. The study of drugs covers their origins, chemical features, biological effects, and therapeutic applications. Based on a variety of conditions, these effects can be therapeutic or toxic. Therapeutics, which focuses on the impact of pharmaceuticals and other chemical agents on disease, and toxicology, which studies the adverse, or toxic, consequences of drugs and other chemical agents, are two fields in which pharmacologists are commonly interested. Medicine, pharmacy, nursing, dentistry, and veterinary medicine are just a few of the fields that constitute pharmacology. Pharmacology is at the cutting edge of some of modern medicine's most fascinating advances.